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Exercise 35 THE URINARY ORGANS Objectives After completing this exercise, you sh

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Question

Exercise 35 THE URINARY ORGANS Objectives After completing this exercise, you should be able to Before You Proceed Consult with your instructor about using protective disposable gloves when performing portions of this exercise 1. Identify the components of the urinary sys- tem on charts or models and describe their functions. 2. Identify the parts of the kidney on charts models, or specimens and describe their functions. 3. Identifly a glomerulus and glomenular capsuleOrgans of the Urinary System 4. Define all terms in bold print The components of the urinary system are shown in Figure 35.I: two kidneys, two ureters, the urinary blad- der, and the urethra. The kidneys are bean-shaped reddish brown organs located on either side of the ver- tebral column and posterior to the parietal peritoneum (retroperitoneal). Each kidney receives blood from a renal artery, which branches from the abdominal aorta. Blood leaves each kidney through a renal vein, which empties into the inferior vena cava. when viewed microscopically Materials Models of the urinary system and a kidney Sheep kidneys, fresh or preserved Sheep kidneys, triple injected, sectioned Dissecting kits and trays Long. sharp knife Prepared slides of kidney cortex and medulla Protective disposable gloves Urine, formed by the kidneys, is carried from each kidney to the urinary bladder through a slender tube, a ureter. Peristaltic contractions of the ure- ter wall propel the urine to the bladder. Each ureter Figure 35.1 The urinary system. Abdominal Aorta Inforior Vona Cava Kidhey Renal Arteries Renal Veins Sphincter, Exbernal Sphincter, Inteenal Unsters Urethra (2 places) Urinary Bladder -10 193

Explanation / Answer

8- Abdominal Aorta

6-Inferior Vena Cava

5- kidney

7-Renal artery

4-Renal vein

9- Sphincter external

10-Sphincter internal

3- Ureter

1- Urethra

2- Urinary Bladder